Investigation of the Hydrogen Stratification of the Metal of the Active Gas Pipeline

2018 ◽  
Vol 284 ◽  
pp. 1302-1306 ◽  
Author(s):  
O.A. Nasibullina ◽  
A.G. Gareev ◽  
Rif G. Rizvanov
Keyword(s):  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Gas Pipeline ◽  
Negative Effects ◽  
Local Zone ◽  
Gas Industry ◽  
Hydrogen Corrosion ◽  
Metal Structures ◽  
Metal Microstructure ◽  
Free Metal

One of the most common types of metal destruction in the oil and gas industry is hydrogen embrittlement. Hydrogen corrosion is a complex of negative effects of hydrogen on steel, leading to the destruction of metal structures. Hydrogen passes through a defect-free metal, without lingering in it. In the presence of defects, hydrogen is retained in the metal forming a brittle solid solution, metal stratification along the segregation streamer, blistering. Studies of the metal of a gas pipeline made of steel 09G2S are presented in the article. The sample was selected from the local zone of destruction in the condensate collector, the metal of the pipe had typical for hydrogen corrosion stratifications. The scope of the study was identification of the most dangerous part of hydrogen corrosion on the sample taken from the local zone of destruction. Studies on the chemical composition and mechanical properties of 09G2S steel were also carried out. Stress-related characteristics of the metal microstructure of the failed gas pipeline were obtained and the character of the destruction progress was revealed. The presence of sulfides cluster in the metal of studied pipe was determined applying metallographic method for determining nonmetallic inclusions.

Assessment of Conflict Management in Niger Delta and Implications for Sustainable Development of Oil and Gas in Nigeria

2021 ◽  
Author(s):  
Humphrey Otombosoba Oruwari
Keyword(s):  
Conflict Management ◽  
Niger Delta ◽  
Oil And Gas ◽  
Ecological Factors ◽  
Oil And Gas Industry ◽  
Negative Effects ◽  
Gas Industry ◽  
Secondary Sources ◽  
Positive Elements ◽  
Oil And Gas Companies

Abstract Nigerian oil and gas industry have over the years witnessed incessant conflicts between the stakeholders, particularly the host communities in Niger Delta region and the oil and gas companies in partnership with the Federal Government. Conflict which is here defined as manifestation of disagreement between individual and groups arising from differing and mutually incompatible interests has both positive and negative effects depending on how it was managed. Managing conflicts is all about limiting the negative aspects. The study examined conflicts management in Nigeria oil and gas industry and how best the positive elements of conflicts can be maximally exploited for the mutual benefit of both oil and gas company and the host communities in Niger Delta. The study adopted the multidisciplinary approach, literature review, case study and relied on secondary sources using analytical method of data analysis. The study findings revealed that the major factors that precipitate conflicts between the oil and gas industry and host communities in Niger Delta include economic, social, political, and ecological factors. There are available strategies that can be used in conflict management. These include avoiding, accommodating, or smoothing, competing, or forcing, compromising, and collaborating. Any of these strategies can be used to manage conflict depending on the situation, the environment factor, and the nature of the conflict. The problem is that the oil and gas companies in partnership with the Nigerian government often adopted the wrong approach in dealing with the conflict with host communities, using avoiding or forcing strategies. The study recommends collaboration strategy which ensues long term-term solution to mutual benefits.

Improving Motor Performance and Runtime in ESP Applications with Novel Sinewave Filter

2021 ◽  
Author(s):  
Anthony Tony Hoevenaars ◽  
Mike McGraw ◽  
Colt Burley ◽  
Elizabeth Bierhaus
Keyword(s):  
Power Quality ◽  
Motor Performance ◽  
Oil And Gas ◽  
Filter Design ◽  
Substantial Reduction ◽  
Oil And Gas Industry ◽  
Negative Effects ◽  
Gas Industry ◽  
Variable Speed Drives ◽  
Electrical Submersible Pumps

Abstract In recent years, the Oil and Gas Industry has greatly improved efforts in evaluating the electrical system involved in operating Electrical Submersible Pumps (ESP). The negative effects that poor power quality has on ESP motors equipped with variable speed drives is generally understood by the industry. However, with a strong focus on optimization and reliability, improvements of the power quality provided to our ESP systems has tremendous potential to enhance the ESP lifecycle. This paper will provide a detailed description of the current mitigation technique involving the conventional designs of PWM sinewave filters. Additionally, this paper will outline multiple Case Studies that have been conducted on several wells with ESPs installed, that demonstrate the success of a new design approach for PWM sinewave filters yielding lower electrical distortion and significantly improved motor performance. A detailed analysis evaluating problems and premature failures was performed on existing ESP wells equipped with both "6-step" and PWM operation. Computer simulations executed to analyze the new sinewave filter design showed much lower voltage distortion (< 2%) as well as other important improvements in performance included a very low insertion loss (ie. < 3% drop in voltage at full load) and improvement in PF to near unity at the inverter output. To complete the study, sinewave filters were built, tested and installed in several wells. Field data was gathered providing power quality measurements for electrical distortion, current imbalance, motor temperatures, motor vibration and production rates. The successful sinewave filter design used different tuned frequency parameters than conventional sinewave filters with clear data providing performance improvement. These results showed a substantial reduction in motor temperature leading to confidence in operations regarding the positive effect this would have on lifecycle of downhole equipment. The improvements can be streamlined across other ESP wells in the field leading to improved runtime, decrease in CAPEX & OPEX cost associated with ESPs and other surface equipment eventually leading to a strong cash flow performance for operators.

Pitting and CO2 corrosion behavior of oil and gas pipeline welds

2021 ◽  
Vol 63 (11) ◽  
pp. 1018-1024
Author(s):  
Huan Xie ◽  
Xiang Chen ◽  
Yongxin Lu ◽  
Qian Zhang ◽  
Haitao Wang
Keyword(s):  
Corrosion Behavior ◽  
Oil And Gas ◽  
Welded Joint ◽  
Oil And Gas Industry ◽  
Gas Pipeline ◽  
Co2 Corrosion ◽  
Fe Model ◽  
Gas Industry ◽  
Remaining Service Life ◽  
Pit Depth

Abstract A finite element (FE) model is presented in this work that is used to analyze the effect of pitting corrosion on the CO2 corrosion behavior of oil and gas pipeline welds. The FE model contains two parts, i. e., stress calculation of the welded joint using Abaqus software, and of the chemical reaction at the welded joint using COMSOL Multiphysics® software. The effect of transportation pressure, pit depth and welding material on the CO2 corrosion behavior of weld metal was investigated using the FE model. It turned out that the FE model is helpful to instruct the management and to assess the remaining service life prediction of pipelines in the oil and gas industry.

The economic benefits of digitalization in the oil and gas industry

2021 ◽  
Vol 27 (3) ◽  
pp. 672-692
Author(s):  
Pavel A. DROGOVOZ ◽  
Nikita I. KHARIN
Keyword(s):  
Economic Impact ◽  
Production Management ◽  
Oil And Gas ◽  
Digital Technologies ◽  
Oil And Gas Industry ◽  
Economic Benefits ◽  
Competitive Advantages ◽  
Negative Effects ◽  
Gas Industry ◽  
The Past

Subject. This article explores the process of introducing digital technologies into the oil and gas industry production and management and getting the economic impact of such implementation. Objectives. The article aims to identify and assess the economic impact of the introduction of digital production technologies in the oil and gas industry over the past five years, and describe the positive and negative effects of digitalization of the oil and gas industry. Methods. For the study, we used the methods of comparative and statistical analyses, forecast data obtaining, and synthesis of results. Results. The article reveals the main effects of the digitalization of the oil and gas industry over the past five years. It describes the positive and negative effects of the digitalization of the oil and gas industry and predicts the effectiveness of this process. The article presents developed strategic guidelines to create new competitive advantages of the oil and gas industry through the production digitalization. Conclusions and Relevance. To maintain efficiency and create additional competitive advantages of the Russian oil and gas industry, it is necessary to actively introduce digital technologies of production and management, new IT-strategies. The findings and results obtained can be useful to scientists specializing in the digitalization of the oil and gas industry and for managers of different levels of oil and gas sphere to apply them in strategic production management.

scholarly journals Inlet pressure simulation of pigging in uphill gas pipeline

2019 ◽  
Vol 20 (4) ◽  
pp. 406 ◽  
Author(s):  
Honggang He ◽  
Zheng Liang ◽  
Yishan Guo
Keyword(s):  
Gas Flow ◽  
Oil And Gas ◽  
Pressure Rise ◽  
Oil And Gas Industry ◽  
Gas Pipeline ◽  
Inlet Pressure ◽  
Gas Industry ◽  
Flow Equations ◽  
Pipeline Inspection ◽  
Common Operation

Pipe cleaning is a common operation in the oil and gas industry. In this paper, the governing equation of the pipeline inspection gauge (PIG, lowercase pig is commonly used) speed is combined with the gas flow equations. The method of characteristics (MOC) is used to solve the transient equations of gas flow. And the process of a pig passing over an uphill section of a gas pipeline is simulated. The results indicate that a pig may get stuck in uphill gas pipeline, due to the coupling of the gas and the pig. Under these circumstances, a higher pressure of the upstream could be helpful for driving the pig in motion. Additionally, the ratio of inlet pressure rise during the pigging process is primarily determined by the inclination of the uphill section. In addition, a formula to predict the inlet pressure during pigging in an uphill pipe is presented. Furthermore, the proposed method and solution can be utilized to predict the speed and position of the pig, as well as the gas pressure and the stoppage of the pig in hilly gas pipelines.

Integrity of Small Angle Mitered Joints

2016 ◽  
Author(s):  
Gavin (Guowei) Zheng ◽  
Iain Colquhoun ◽  
Joe Paviglianiti
Keyword(s):  
Sensitivity Analysis ◽  
Small Angle ◽  
Thermal Loading ◽  
Oil And Gas ◽  
Strong Dependence ◽  
Oil And Gas Industry ◽  
Gas Pipeline ◽  
Theoretical Development ◽  
Gas Industry ◽  
Cyclic Service

Miter bends are permitted for use in the oil and gas industry in a variety of configurations. This paper addresses small angle miter joints used to correct minor misalignments. The CSA Z662-15 standard (Oil and Gas Pipeline Systems) states in the construction section (Clause 6.2.3(g)) that “mitred bends shall not be used”. However, a note accompanying the clause states that “deflections up to 3 degrees caused by misalignment are not considered to be mitred bends.” Nonetheless, concerns continue to be raised that stresses introduced due to this misalignment can affect safety and operation of pipelines. This paper reviews literature of failures associated with mitered joints and the theoretical development of stresses in miters, and presents results from a linearized sensitivity analysis of buried mitered joints under pressure and thermal loading based on ASME B31.1 and B31.3 criteria. The paper contains an analysis of the origins of CSA-Z662 Clause 6.2.3(g). Recognizing that the stresses introduced by miters are discontinuity stresses, the paper discusses the effects of such stresses, including the use of miters in cyclic service. Recognizing also the strong dependence of D/t ratio on the discontinuity stress, the paper suggests a modification to the Z662 approach to account for this effect. This modification would provide guidance to the use of miters to effect small deflections both during design and construction of piping.

scholarly journals Speed Simulation of Pig Restarting from Stoppage in Gas Pipeline

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Honggang He ◽  
Zheng Liang
Keyword(s):  
High Speed ◽  
Gas Flow ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Pressure Change ◽  
Gas Pipeline ◽  
Maximum Speed ◽  
Gas Industry ◽  
Pipeline Inspection ◽  
Common Operation

Pigging is a common operation in the oil and gas industry. Because of the compressibility of the gas, starting up a pipeline inspection gauge (pig) from a stoppage can generate a very high speed of the pig, which is dangerous to the pipe and the pig itself. Understanding the maximum speed a pig achieves in the restarting process would contribute to pig design and safe pigging. This paper presents the modeling of a pig restarting from a stoppage in gas pipeline. In the model, the transient equations of gas flow are solved by method of characteristics (MOC). Runge-Kutta method is used for solving the pig speed equation. The process of a pig restarting from a stoppage in a horizontal gas pipe is simulated. The results indicate that the maximum speed a pig achieves from a stoppage is primarily determined by the pressure of the pipe and the pressure change caused by the obstructions. Furthermore, response surface methodology (RSM) is used to study the maximum speed of pig. An empirical formula is present to predict the maximum speed of a pig restarting from a stoppage in gas pipeline.

Emotional Intelligence: A Modern Approach to Health and Safety in the Oil and Gas Industry, Effects of Covid-19 Pandemic in Work Environments, and Solutions to Enhance Work Deliverability - A Case Study of Nigeria

2021 ◽  
Author(s):  
Justice Osuala ◽  
Matilda Obuh
Keyword(s):  
Emotional Intelligence ◽  
Oil And Gas ◽  
Health And Safety ◽  
Oil And Gas Industry ◽  
Work Environments ◽  
Negative Effects ◽  
Gas Industry ◽  
Modern Approach ◽  
Analytical Result ◽  
The Impact

Abstract Assurance of reliable public health and safety of/in work environments patently depends on the Emotional Intelligence (EI) of workers. EI, which is the ability to understand and regulate emotions of one-self and others, is one of the uncommonly utilized strategies to optimizing deliverability in workplaces. Work pressure can never be overemphasized, as when not managed effectively, can retard compliance to industry set rules, integrity, and values, as well as distort deliverability of workers. The oil and gas sector were not left out in the impact of the COVID-19 pandemic which did not only affect the economy of the global oil market, but also, jeopardized the health and safety of its workers and the environment at large. This paper highlights Emotional Intelligence (EI) as a method to curb the negative effects which the pandemic has caused. It further positions Affability as a must-have skill for oil and gas workers for the purpose of assuring health and safety in work environments. Conceptual and critical thinking processes were utilized to introduce and prioritize Affability as an aspect of EI to proffering solutions to threats regarding safe and workable environment in the industry. Using SPSS, a comprehensive analytical result was generated for 102 oil and gas workers in Nigeria, who took an Emotional Intelligence test compiled by Global Leadership Foundation. A mean of 45.35% was calculated with 57% of 102 scoring below %50. A critical observation indicates that, EI among oil and gas workers was unreliable. This is due to unawareness to effectiveness of developing affable skills to combat safety and health threats in work environments. In an informative way, this paper introduces Affability as a core aspect of Emotional Intelligence and its effectual contribution to promoting a healthy and safe oil and gas work environment.

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